Just got 10 of these from Rock Auto, 3 of them got dented somewhat-this one was the worst with one dent right at the edge of the dome-so it got CUT! As you can see, this filter in an Ultra has no Sure Grip, and no flutes-so be prepared to use a filter gripping wrench (I have a rubber one, a 3/8" drive band one, and a Lisle) to get it off. The baseplates are identical, down to the letter code & one hole slightly bigger than the others. Still using the coated steel backing, and a coil spring (instead of the usual Ultra leaf), guessing due to a heavier duty application. Not cutting the Ultra, it was the ONLY newer one I ever found at an AAP (when they carried them). If only they could use the Distance Plus can...